- Postal Museum (UK) – Caring for Stamps and Postal History – https://www.postalmuseum.org/collections/highlights/philatelic-collection/caring-stamps-postal-history/
- Stamp Smarter Library of How-To’s – https://stampsmarter.org/learning/Home_HowTo.html
Thanks for visiting SOSC, (pronounced "so-sh") and stands for State of Stamp Collecting. Here I showcase postage stamps and postal-related material with special emphasis on USA Philatelic Catalog, US first day covers, Black culture, technology, art and space.
State of Stamp Collecting 